Lamp



J. W. BROWN.

LAMP.

APPLICATION FILED Nov. 1.8, 1920.

Patented Apr v25, 1922.

been found to be extremely desirable.

lVith these objects and others of similar T0 aZZzv/wm it. may) concern:

Be it known that JOHN W. BROWN, a

' citizen of the United States, residing at Columbus, in the county of Franklin and v State of Ohio, has invented certain new. and useful Improvements in Lamps, of which the following is a specification.

. This invention relates to lamp-s,particu-,

the same time shall be positive in its various actions such as'locking the various lamp .partsin their properly assoclated relatlon.

. To this end, it isone object of my invention-to provide a plurality of hook -engaging members designed for cooperation with a suitable hook structure carried by the lamp ,body,.hook engaging'members being carried by thelens ring and being properly located around the interior thereof. I

p A further object' of the'inventionresides in the combination of a means for locking the lens ring and lamp body together and an auxiliary latch structurefor positively holding these parts in their locked relation, this auxiliary latch structure being designed to co-operate with any of the hook engaging members located within the lens ring. By

' this arrangement, the user or operator need pay no attention to, any particular manner or position in which the ring should be mounted upon the body being at all times certain that the auxiliary latch structure will be effective no matter in which position the ring is applied so long as the hook structures are brought into proper engagement with their engaging members.

Still another object-of my invention re- I sides a inthe auxiliary latch structure itself.

This is of such form that it; may be permanentlylocked in either an operative-0r inoperative position. This arrangement has nature in view, the present invention resides in the arrangement and combination of. parts hereinafter claimed. The preferred embodiment of my invention is shown 1n the accompanying sheet of drawings in which similar characters of reference designate corresponding parts and in which,

Figure 1 is a view in partial side elevation 'Specificationof Letters P atent. f

tive of the type of hook engaging member JOHN w. BROWN, OF COLUMBUS, OHIO, ASSIGNOR o 'lI-IEJ. w. BROW -minu aef5 TURING- COMPANY, or COLUMBUS, 01110, n CORPORATION or orno.

Application filed November 18, 1920. Serial No. 424,999,

and partial vertical section .throughlamp J embodying'the principles of my invention,

Figure 2 is a-Y sec-tion'taken on line 22 i of Figure 1' and looking in the direction'of the-arrows, I I t Figure?) is a broken section" represented approximately by line 3-3 Of-FigureQ, and -y Figure 4c is a detached view in perspecused by me.

In these drawings the lamp body'itself is" designated by the reference numeral l,

and is provided with an inwardly 4 projecting annular g 2 S p n outer end. V

This flange formsa; shelf structure or sup .port upon which the .flange'or shelf 3 of thereflector eis designed to rest; Bythis arrangement, the reflector is. positively lamp bulb and thus maintainsproper 'rela'-; tion therewith at, all times.v A lens ring. tis provided which in itself is of, general I located with "respect tothe positionof. the i i L,shape, the leg!) being designed and-of a size; to fit the lamp bodywhile {the leg 6,

it is from this leg that, 1911's {is-inmmtm in position. v

The means for holdingi 'the shown at-Q bymeans .ofairivetor other and. reflector intheir properly as} 1 1 suitable forniof connection tothe underside" of the 'bodyiflange 2. This flangeis also cut out 'at suitable intervals asshownat I i 10 to permit'thespring ho'oksto pass there; through; These spring hooks areeach given.

a pair of reverse bends, 11 and -12a1'1drare i of suchform that their free ends l3 bear to; T

ward the body flange 2. The refiectonflange 3 is' cut out atsuitable intervals asshown at 14. to permit the application of the reflector to its gassembled positionas sho-wn'in-Figure} l and by aslight twist, the hooked ends 1.3 of the springs-8, bear against the refiector f flange and hold itin firm relation withthe body flange 2 when the lensiringjis removed.

position and to this end, this lens ringis" provided with a plurality of hook engaging members of the form shown at 15 in Figure 1 1 0- These same spring hooks are utilized to hold the lens ring'in its applied.

overlies the open-end :of the damp body and; 89f

a equally spaced about its interior. These hook engaging members are short sections bent to a. general 2 shape as shown and have their legs 16 secured to the leg 5 of the lens ring while their legs 17' are secured to the leg 6 of the lens ring. The intermediate portions 18 lie in the same plane and proje'ct inwardly at right'angles to the axis of the reflctor and body and form the means of abutment of the lens ring against the refiector .flange when the parts are properly assembled. A slight twist then causesthe hooked ends 13 of the springs 8 to engage these intermediate portions and securely clamp them in position upon the reflector flan ge. In this manner, all of the lamp parts are held in their proper assembled relation.

The angular hook engaging members 15 are of comparatively simple construction and may themselves be made of scrap materlal. In addition toservmg the purpose of engaging the hooks-they also properly lock the lens ring upon the body.

In order to guard against the accidental removal of the lens ring from its proper position. upon the lamp body, I have provided an auxiliary latch structure in the form of a spring wire 19 properly secured at one end as shown at 20 to the interior of the lamp body and provided with a shoulder portion 22 at its outer end. This auxiliary latch is so located upon the lamp body with respect to the various spring hooks 8 that when the lens ring'is properly placed in position upon the lamp body to be engaged by the hooks, the auxiliary latch 19 will snap into position beyond the shoulder 21 formed by one end of any of the hook engaging members 15. By this arrangement, .the user need take no precautions about properly applying the lens ring except that it be in such position to be engaged by any of the spring hooks 8. In other words,

this auxiliary spring latch 19 is so posi-- tione'd that it will engage with any of the hook enga-gingmembers 15.

In order to move the auxiliary latch 19 out of engagement with the shoulder 21 to permit removal of the lens ring, I have provided a guard member or plate 23 which is also pivotally mounted at its lower end as shown at 2 to the lamp body. Its upper end is movable over that portion of the lamp body in which the slot 25 is located which permits the projection of the end 21 of the auxiliary latch therethrough. By moving this guard member 23 to the rightas shown in Figure 2, this auxiliary latch will be retracted and it may be held positively in such retracted position by tightening of he nut 26 which is carried by the threaded bolt 27 secured to the guard plater23, This threaded bolt projects through the'slot 28 in the lamp body and the nut 26 may be or; such form to also serve as a handle piece in moving the guard'plate from one position to another. 7

It will thus be apparent that the auxiliary latch may be removed from its operative position and it'may be held positively in such removed position by tightening of the nut-'26 against the lamp'body. Likewise, when the guard plate is moved to thexposition shown in Figure 2,- it may be positively held in such position by again'tightening the nut. However, Ihave found itdesirable to so proportion the spring 19 to automatically force the guard plate 23 to the position shown in Figures '2 and 3- which Wlll'llllll only necessitate loosening o1 thenut 26 when" itis desiredto move it from the rightb f' Figure 2 to the left. This is accomplished by the inclined portion 29 of the auxiliary latch bearing against the guard plate itself.

What I claim is: i 1. In a headlight,'a lamp body, a reflector therein, means carried by said body to limit the refiectors inward movement, a lens ring, a plurality of hook structures carried by said body, a plurality of individual hook engagi members equally spaced about the lb I interior of said ring including an inwardly projecting part and an angular part adjacent the side portlon of said r1ng,an 'ELUXlllarylatch structure located andj-ar-ranged' 'a plurality of hook structures carried by said body, a plurality of individual hook' engaging members equally spaced about'theinterior of said ring including aninwardly projecting part and an angular part adjacent the side portion of said ring,an' auxiliary latch structure located and arr nged to engage the angular part of any. of said members comprising a spring member carried by and passing through a slot in said body and engaging said ring, a guard member pivoted to said body whose free end is movable to lie beneath said springand' body, and means for locking said guard member in either a position to permit or to prevent passage of said spring through said slot.- I LL In testimony whereof Iatiix my signature.

JOHN W. BROWN. 1

light, alampbody, a 'reflector 

